Regarding the steps to upload ssh key to gerrit account

I have read the Qt contribution documentation,
so before downloading the source code and compiling. We need to follow
three steps.

How to get started - Gerrit registration
Local Setup
Configuring Git.
I am using Ubuntu OS, and Qt version 5.7.
Do we need to do as root user?.

During generating the ssh public key.
we get two keys, i have saved as id_rsa id_rsa.pub . under ~/.ssh folder.
Here is a link were i uploaded ssh key of id_rsa.pub.https://postimg.org/image/okdcl8ul7/